Destroy 4 Command Centers, Hatcheries, or Nexuses in an Unranked or Ranked game.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Score the rank of Gold in all the challenge missions.
Destroy all Zerg structures in "The Devil’s Playground” mission on Normal difficulty.